Drill-press chuck.



No. 893,875. PATENTED JULY 21, 1908. F. SCHNEIDER.

DRILL PRESS CHUCK.

APPLICATION FILED 1730.14, 1906.

' a top-view and shows it arranged for hold 7 mg apiece'of work of irregular shape.)

' DER,

SldlIlg at Cincinnati,

tended v .FREDERIOK SCHNEIDER, or crncmm'ri, onro.

DRILL-PRESS onucx.

Specification of Letters Patent.

Patented .rui si, 1908.

Application filed December 14, 1908. Serial No. 347,740.

To cll whom it may concern: Be it known that I, Fnnnnnrox SCHNEI- a citizen of the United States, and re- Hamilton county,-State of Ohio, ful Im rovements in Drill-Press Chucks; and I o declare the following to be a clear, full, and exact description thereof, attention being called to the accompanyin drawing, with the reference characters mar ed therepn, which form also a part of this specifica- This invention relates to improvementsin chucks, meaning thereby devices which are used for holding work in position while operated upon by a machine-tool.

This particular chuck is principally inor .use in connection with v drillresses, ta ping machines etc. but may also e used ot EIWISQ, as for instance in connection with planers and milling machines.

The ob'ect of the invention is to provide a device whereby work may be quickly and firmly secured in position, of irregular shape, to beworked upon by the machine-tool.

The invention consists of the chuck as shown and described and claimed hereiner. The accom anying drawing shows the chuck as used in connection with a 'drillpress for boring or tapping.

' held to be worked upon at rig Figure 1, is a perspective view, the chuck belng arranged to ho (1 round work while beng acted upon endwise or axially. 2

Fi 3, 1n a similar 'view shows it for holding a piece of flat-work of regular shape. 4, 1s a slde-view with parts broken away and porting a piece ows in an endview with parts broken away,

t angles to its axis." Figs. 6, 7, 8, and 9, are side-views at reduced scale and illustrate each a diflerent' manner of use.

The base of the chuck is of rectangular shape'andprojects on all four sides forming fiangeslO, which permit engagement by the usual holdin devices, or dogs 11, whereby the chuck is eld on the table 12, of the particular machine-tool on See Fig. 5. Such an attachment might be 5 required when used in connection with a planer, while in case of use on a drill-press, it

becomes unnecessary,

have invented certain new and useparticularly when round work which it is .used.

since the weight of the chuck is suflicient to hold it in place, there being no lateral action tending to displace it. Near opposite ends of this base there are two vertica and which with this base, and its flanges form an integral casting. The space between to receive the work these checks is used which may be held therein directly by means of screws 14, as shown in Fig. 2, or by the intermediate use of Vbl0cks 15. These blocks have complementary V -grooves, which, when arranged to be opposite each other, serve to firmly such which is c. lindrical w 'e being held a ainst such wor by the clamping screws 14. T ese grooves may be arranged to suit particular requirements and are of different sizes, that Is depth andwidth, to accommodate difierent sizes of work. i There are horizontal grooves 16, and vertical grooves 17.

cheeks 13,-13, which'aretapped to receive each two clamping screws 14,14,'

grip the work particularly The use of the vertical grooves of the V- V blocks is shown in Figs. 1, 4, and 6. The use of the horizontal grooves is shown in Fig. 7. The V-blocks are also used 'in connection with strai ht work when'they serve to fill up the space etween the cheeks, to reduce the manipulation of the clampin -screws. Fig. 3 shows one'block in use, in ig. 9, the two blocks are shown as used to fill 18 are wearing-plates, to prevent wear up the spacei and in'ury to the work to be held, or to the I V-bloc and caused by the ends 'of the clamping-screws digging into the same. These la'tes ma be reversed when worn on one si e and so independently renewed .without affecting the chuck. One of these plates serves also to rotect that one of the cheeks, "against whic the work is-pressed,

or which receives the pressure from. the clam ing-s'crews' seated in the opposite cheeli note Figs. 1, 3,4, 6, 7, and-9. Ordinaril this one late remains in position and is he (1 against t e particular ad acent check by screws. 19,-19. It is removed when work is'to be done as shownv in Figs. 2, 5, or 8. To facilitate its quick removal or attachment openings '21 are used to receive screws 19, which latter are'passed through these openings, clampin -screws 14 havmg first been removed. T ey are'of smaller diameter however and do not engage the threads in these openings, throu h which they pass without en agement. I owever into p hey are tapped ate 18, so that a few turns.

or connect this plate.

slot is entirely open, that is it extends completely through the base so that chips and shavings may readily drop through whereby the device is always kept clear. Its lower part is enlarged in width as shown at 24, to form shoulders 25, against which heads 26, of these bolts bear w en they are drawntight by nuts 27. At opposite ends near the adjacent cheeks slot 23, is enlarged be a pin,

to permit said blocks for the chuck they cannot be by removal of shoulders thereat as shown at 28, to permit quick removal upwardly of the tie-bolts whenever it is necessary to clear the space between the cheeks for pur-' poses as shown for instance in Figs. 2, 3, or 8. he bolts may be re-inserted from above with equal facility an in the upper side of the V-blocks, so as to be out of the way. These bolts serve also to hold the V-blocks in osition on the base.

when they are adjuste againstthe work by.

The nuts on them the time, sufficiently to slide to their adjusted positions, after which they are tightened again.

In Figs. 5, and 8, I illustrate another use I where round work of more extensive length is to be held. Such work rests on top of cheeks 13,-13, and across the space between them, this s ace having first een cleared as shown in i 8. The work rests in V-grooves 31, and is eld'therein by bars 32, held down by screws 33. will now briefly repeat a description of the possible different ways in which this chuck the clamping screws. are merely loosened at may be used, thework being in each case indicated by w.

Fig. 1, shows a round piece be drilled endwise or axially. vIt is held between the V-blocks, occupyin a complementary set of the vertica grooves therein.

' Fig. 2, shows a piece of work of irregular shape, the V-bl'ocks are dispensed with since used, and everythin in the space between the cheeks is removed. The

work is held by clamping-screws 14 direct,

which are adjusted, each to meet the con- Fig. 4, shows the c figuration of the work. Fig. 3 shows a iece sha e. ltswidth eing V-b ocks is used as a 's' of work of re lar limited, one o the uck. used to center-piece between they-blocks, the work itself, being tooirregular to be supported on for the purpose d without lifting the chuck. Nuts 27, occupy counter-sinks 29,

which might short shaft, and which is placed to' ceiving grooves of are arran ed and planed so as to be either at right ang es or .para el to the edges of the .flanges; of the'base. adjustment of the 'machine-tool since the acer to fill up, 2'-

ho a

ends, \vided. 'th screw-threaded. openings the table, rests on this latter is thus used to sup ort the work and to locate its osition wit reference to the drilloint. he work in this case may be held y hand.v Any work which for drilling has to be held between centers, may be supported in this manner, particularly shafts of being provided at opposite ends with the center holes which receive the lathe-center.

Fig. 5, shows round work held on top of the cheeks in a horizontal position to be drilled sidewise. Everything in the space between the cheeks is removed in, this case.

Fig. 6, shows a use similar to the one shown in Fi 1, the V-block being used to hold the sha t' and pinionfor drilling akeyway.

Fig. 7, shows ause similar to the one shown in Fig. 5, a round piece of work being held in a horizontal position, the V-blocks being used however, it being held in a set of complementary horizontal V-grooyes in said bloc s. I

Fig. 8, shows shown in Fig.1 5, work being supported in a. horizontal position on to of the space between them 1s cleared.

Fig. 9, shows flat regular work, the V- blocks being merely used as spacers to lessen manipulation of the clamping-screws.

The chuck may of .course'be used in many other connections which ireadily suggest themselves to the practica machinlst.

the various means shown, it may always be adjusted to fit the sha ular work of all kin s,

pins, tool-handles for lathes,

crank-shafts, wristings may-readily be he analogous to the methods indicated in Figs. 2, and 4. The work is quickly and readily secured, saving much time as against the usual methods of holding work. At the same time it is securely held so as to prevent injury to tools and breakin of drills, taps, and reamers.

All workoldingthe work-holding parts This facilitates quick work on ,the table of a edge 'of any of the flanges may be readil brought into acertain position'with re erence to one of the edges of the table, that is arallel or at rlght angles thereto, placed in proper pos'tion with reference to he movement. or position of the tool.

Having described my invention I claim as new:

center-piece which (I V a use similar tothe one the cheeks and drill-press han dles and levers, taperingdwork, rough cast-.

surfaces and work-ree of the work. Irregwhereby t 'e work .is at once 1. A work-holding chuck consisting of a base which has integral arranged parallel to eachother and proadaptcheeks at opposite ed to receive clamping-screws, said base having also a longitudinal slot between these cheeks, the lower part of which slot is enlarged, workholdin -blocks fitted to this base wh ch have verticaq V-grooves in their sides opposite each other, and vertical bolt-holes counter-sunk at their up er ends, tie-bolts for these blocks, the hea s of which occupy the enlarged part of the slot while their upper ends. extend into the counter-sunk parts mentioned,-and nuts occupyin these parts of the bolt-holes and engaging t e ends of the golts therein to hold the blocks down on the ase.

2. A Workholding chuck consisting of a base which has integral cheeks at opposite ends, arranged parallel to each other and provided with screw threaded openings adapted to receive clampin screws, said base havlng also a longitudinal s 0t between these cheeks which slot extends through the entire thickness of the base to permit waste to pass' out and is enlarged in its lower part so as to form shoulders, apart of this latter at both Zof which occupy the enlarged part of the slot in the base and are held by the shoulders formed in the upper part ofthe slot, said bolts being removable through the enlarged ends of the slot.

3. A chuck consisting of a base having a longitudinal slot and provided with cheeks at opposite ends of this slot which have alined V-grooves in the center of their u per side, tapped openings, one on each si e of each V-groove, sunk in from the top of these cheeks and additional tapped 0 enings in these cheeks below their top and arranged to extend through them at right angles.

In testimony whereof, I hereunto'set my signature in the presence of two witnesses.

FREDERICK SCHNEIDER. Witnesses:

C. SPENGEL, T. LE BEAU. 

